src/gtk/toplevel.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/toplevel.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #ifdef __VMS
  22 #define XIconifyWindow XICONIFYWINDOW
  23 #endif
  24
  25 #include "wx/toplevel.h"
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/frame.h"
  29     #include "wx/icon.h"
  30     #include "wx/log.h"
  31     #include "wx/app.h"
  32 #endif
  33
  34 #include "wx/gtk/private.h"
  35 #include "wx/evtloop.h"
  36 #include "wx/sysopt.h"
  37
  38 #include <gtk/gtk.h>
  39 #include <gdk/gdkx.h>
  40
  41 #include "wx/gtk/private/win_gtk.h"
  42
  43 #include "wx/unix/utilsx11.h"
  44
  45 // XA_CARDINAL
  46 #include <X11/Xatom.h>
  47
  48 #if wxUSE_LIBHILDON
  49     #include <hildon-widgets/hildon-program.h>
  50     #include <hildon-widgets/hildon-window.h>
  51 #endif // wxUSE_LIBHILDON
  52
  53 // ----------------------------------------------------------------------------
  54 // data
  55 // ----------------------------------------------------------------------------
  56
  57 // this is incremented while a modal dialog is shown
  58 int wxOpenModalDialogsCount = 0;
  59
  60 extern wxWindowGTK     *g_delayedFocus;
  61
  62 // the frame that is currently active (i.e. its child has focus). It is
  63 // used to generate wxActivateEvents
  64 static wxTopLevelWindowGTK *g_activeFrame = (wxTopLevelWindowGTK*) NULL;
  65 static wxTopLevelWindowGTK *g_lastActiveFrame = (wxTopLevelWindowGTK*) NULL;
  66
  67 // if we detect that the app has got/lost the focus, we set this variable to
  68 // either TRUE or FALSE and an activate event will be sent during the next
  69 // OnIdle() call and it is reset to -1: this value means that we shouldn't
  70 // send any activate events at all
  71 static int g_sendActivateEvent = -1;
  72
  73 //-----------------------------------------------------------------------------
  74 // RequestUserAttention related functions
  75 //-----------------------------------------------------------------------------
  76
  77 extern "C" {
  78 static void wxgtk_window_set_urgency_hint (GtkWindow *win,
  79                                            gboolean setting)
  80 {
  81     wxASSERT_MSG( GTK_WIDGET_REALIZED(win), wxT("wxgtk_window_set_urgency_hint: GdkWindow not realized") );
  82     GdkWindow *window = GTK_WIDGET(win)->window;
  83     XWMHints *wm_hints;
  84
  85     wm_hints = XGetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window));
  86
  87     if (!wm_hints)
  88         wm_hints = XAllocWMHints();
  89
  90     if (setting)
  91         wm_hints->flags |= XUrgencyHint;
  92     else
  93         wm_hints->flags &= ~XUrgencyHint;
  94
  95     XSetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window), wm_hints);
  96     XFree(wm_hints);
  97 }
  98
  99 static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
 100 {
 101 #if GTK_CHECK_VERSION(2,7,0)
 102     if(!gtk_check_version(2,7,0))
 103         gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 104     else
 105 #endif
 106         wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 107
 108     win->m_urgency_hint = -2;
 109     return FALSE;
 110 }
 111 }
 112
 113 //-----------------------------------------------------------------------------
 114 // "focus_in_event"
 115 //-----------------------------------------------------------------------------
 116
 117 extern "C" {
 118 static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
 119                                          GdkEvent *WXUNUSED(event),
 120                                          wxTopLevelWindowGTK *win )
 121 {
 122     switch ( g_sendActivateEvent )
 123     {
 124         case -1:
 125             // we've got focus from outside, synthetize wxActivateEvent
 126             g_sendActivateEvent = 1;
 127             break;
 128
 129         case 0:
 130             // another our window just lost focus, it was already ours before
 131             // - don't send any wxActivateEvent
 132             g_sendActivateEvent = -1;
 133             break;
 134     }
 135
 136     g_activeFrame = win;
 137     g_lastActiveFrame = g_activeFrame;
 138
 139     // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );
 140
 141     // MR: wxRequestUserAttention related block
 142     switch( win->m_urgency_hint )
 143     {
 144         default:
 145             g_source_remove( win->m_urgency_hint );
 146             // no break, fallthrough to remove hint too
 147         case -1:
 148 #if GTK_CHECK_VERSION(2,7,0)
 149             if(!gtk_check_version(2,7,0))
 150                 gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 151             else
 152 #endif
 153             {
 154                 wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 155             }
 156
 157             win->m_urgency_hint = -2;
 158             break;
 159
 160         case -2: break;
 161     }
 162
 163     wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 164     wxActivateEvent event(wxEVT_ACTIVATE, true, g_activeFrame->GetId());
 165     event.SetEventObject(g_activeFrame);
 166     g_activeFrame->HandleWindowEvent(event);
 167
 168     return FALSE;
 169 }
 170 }
 171
 172 //-----------------------------------------------------------------------------
 173 // "focus_out_event"
 174 //-----------------------------------------------------------------------------
 175
 176 extern "C" {
 177 static
 178 gboolean gtk_frame_focus_out_callback(GtkWidget * WXUNUSED(widget),
 179                                       GdkEventFocus *WXUNUSED(gdk_event),
 180                                       wxTopLevelWindowGTK * WXUNUSED(win))
 181 {
 182     // if the focus goes out of our app alltogether, OnIdle() will send
 183     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 184     // g_sendActivateEvent to -1
 185     g_sendActivateEvent = 0;
 186
 187     // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );
 188
 189     // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );
 190
 191     if (g_activeFrame)
 192     {
 193         wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 194         wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
 195         event.SetEventObject(g_activeFrame);
 196         g_activeFrame->HandleWindowEvent(event);
 197
 198         g_activeFrame = NULL;
 199     }
 200
 201     return FALSE;
 202 }
 203 }
 204
 205 //-----------------------------------------------------------------------------
 206 // "size_allocate" from m_wxwindow
 207 //-----------------------------------------------------------------------------
 208
 209 extern "C" {
 210 static void
 211 size_allocate(GtkWidget*, GtkAllocation* alloc, wxTopLevelWindowGTK* win)
 212 {
 213     if (win->m_oldClientWidth  != alloc->width ||
 214         win->m_oldClientHeight != alloc->height)
 215     {
 216         win->m_oldClientWidth  = alloc->width;
 217         win->m_oldClientHeight = alloc->height;
 218
 219         wxSize size(win->m_widget->allocation.width,
 220                     win->m_widget->allocation.height);
 221         size += win->m_decorSize;
 222         win->m_width  = size.x;
 223         win->m_height = size.y;
 224
 225         if (!win->IsIconized())
 226         {
 227             wxSizeEvent event(size, win->GetId());
 228             event.SetEventObject(win);
 229             win->HandleWindowEvent(event);
 230         }
 231         // else the window is currently unmapped, don't generate size events
 232     }
 233 }
 234 }
 235
 236 // ----------------------------------------------------------------------------
 237 // "size_request"
 238 // ----------------------------------------------------------------------------
 239
 240 extern "C" {
 241 static
 242 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 243                                      GtkRequisition *requisition,
 244                                      wxTopLevelWindowGTK *win)
 245 {
 246     // we must return the size of the window without WM decorations, otherwise
 247     // GTK+ gets confused, so don't call just GetSize() here
 248     win->GTKDoGetSize(&requisition->width, &requisition->height);
 249 }
 250 }
 251
 252 //-----------------------------------------------------------------------------
 253 // "delete_event"
 254 //-----------------------------------------------------------------------------
 255
 256 extern "C" {
 257 static gboolean
 258 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 259                            GdkEvent *WXUNUSED(event),
 260                            wxTopLevelWindowGTK *win )
 261 {
 262     if (win->IsEnabled() &&
 263         (wxOpenModalDialogsCount == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 264          win->IsGrabbed()))
 265         win->Close();
 266
 267     return TRUE;
 268 }
 269 }
 270
 271 //-----------------------------------------------------------------------------
 272 // "configure_event"
 273 //-----------------------------------------------------------------------------
 274
 275 extern "C" {
 276 static gboolean
 277 gtk_frame_configure_callback( GtkWidget* widget,
 278                               GdkEventConfigure *WXUNUSED(event),
 279                               wxTopLevelWindowGTK *win )
 280 {
 281     if (!win->m_hasVMT || !win->IsShown())
 282         return FALSE;
 283
 284     wxPoint point;
 285     gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 286
 287     win->m_x = point.x;
 288     win->m_y = point.y;
 289     wxMoveEvent mevent(point, win->GetId());
 290     mevent.SetEventObject( win );
 291     win->HandleWindowEvent( mevent );
 292
 293     return FALSE;
 294 }
 295 }
 296
 297 //-----------------------------------------------------------------------------
 298 // "realize" from m_widget
 299 //-----------------------------------------------------------------------------
 300
 301 // we cannot MWM hints and icons before the widget has been realized,
 302 // so we do this directly after realization
 303
 304 extern "C" {
 305 static void
 306 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 307                              wxTopLevelWindowGTK *win )
 308 {
 309     // All this is for Motif Window Manager "hints" and is supposed to be
 310     // recognized by other WM as well. Not tested.
 311     gdk_window_set_decorations(win->m_widget->window,
 312                                (GdkWMDecoration)win->m_gdkDecor);
 313     gdk_window_set_functions(win->m_widget->window,
 314                                (GdkWMFunction)win->m_gdkFunc);
 315
 316     // GTK's shrinking/growing policy
 317     if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
 318         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 319     else
 320         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 321
 322     // reset the icon
 323     wxIconBundle iconsOld = win->GetIcons();
 324     if ( !iconsOld.IsEmpty() )
 325     {
 326         win->SetIcon( wxNullIcon );
 327         win->SetIcons( iconsOld );
 328     }
 329 }
 330 }
 331
 332 //-----------------------------------------------------------------------------
 333 // "map_event" from m_widget
 334 //-----------------------------------------------------------------------------
 335
 336 extern "C" {
 337 static gboolean
 338 gtk_frame_map_callback( GtkWidget*,
 339                         GdkEvent * WXUNUSED(event),
 340                         wxTopLevelWindow *win )
 341 {
 342     const bool wasIconized = win->IsIconized();
 343
 344     win->SetIconizeState(false);
 345
 346     if (wasIconized)
 347     {
 348         // Because GetClientSize() returns (0,0) when IsIconized() is true,
 349         // a size event must be generated, just in case GetClientSize() was
 350         // called while iconized. This specifically happens when restoring a
 351         // tlw that was "rolled up" with some WMs.
 352         // Queue a resize rather than sending size event directly to allow
 353         // children to be made visible first.
 354         win->m_oldClientWidth = 0;
 355         gtk_widget_queue_resize(win->m_wxwindow);
 356     }
 357
 358     return false;
 359 }
 360 }
 361
 362 //-----------------------------------------------------------------------------
 363 // "unmap_event" from m_widget
 364 //-----------------------------------------------------------------------------
 365
 366 extern "C" {
 367 static gboolean
 368 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 369                           GdkEvent * WXUNUSED(event),
 370                           wxTopLevelWindow *win )
 371 {
 372     win->SetIconizeState(true);
 373     return false;
 374 }
 375 }
 376
 377 //-----------------------------------------------------------------------------
 378 // "property_notify_event" from m_widget
 379 //-----------------------------------------------------------------------------
 380
 381 extern "C" {
 382 static gboolean property_notify_event(
 383     GtkWidget*, GdkEventProperty* event, wxTopLevelWindowGTK* win)
 384 {
 385     // Watch for changes to _NET_FRAME_EXTENTS property
 386     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 387     if (event->state == GDK_PROPERTY_NEW_VALUE && event->atom == property)
 388     {
 389         Atom xproperty = gdk_x11_atom_to_xatom_for_display(
 390                             gdk_drawable_get_display(event->window), property);
 391         Atom type;
 392         int format;
 393         gulong nitems, bytes_after;
 394         guchar* data;
 395         Status status = XGetWindowProperty(
 396             gdk_x11_drawable_get_xdisplay(event->window),
 397             gdk_x11_drawable_get_xid(event->window),
 398             xproperty,
 399             0, 4, false, XA_CARDINAL,
 400             &type, &format, &nitems, &bytes_after, &data);
 401         if (status == Success && data && nitems == 4)
 402         {
 403             long* p = (long*)data;
 404             const wxSize decorSize =
 405                 wxSize(int(p[0] + p[1]), int(p[2] + p[3]));
 406             win->GTKUpdateDecorSize(decorSize);
 407         }
 408         if (data)
 409             XFree(data);
 410     }
 411     return false;
 412 }
 413 }
 414
 415 BEGIN_EVENT_TABLE(wxTopLevelWindowGTK, wxTopLevelWindowBase)
 416     EVT_SYS_COLOUR_CHANGED(wxTopLevelWindowGTK::OnSysColourChanged)
 417 END_EVENT_TABLE()
 418
 419 // ----------------------------------------------------------------------------
 420 // wxTopLevelWindowGTK creation
 421 // ----------------------------------------------------------------------------
 422
 423 void wxTopLevelWindowGTK::Init()
 424 {
 425     m_mainWidget = (GtkWidget*) NULL;
 426     m_isIconized = false;
 427     m_fsIsShowing = false;
 428     m_themeEnabled = true;
 429     m_gdkDecor = m_gdkFunc = 0;
 430     m_grabbed = false;
 431     m_deferShow = true;
 432
 433     m_urgency_hint = -2;
 434 }
 435
 436 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 437                                   wxWindowID id,
 438                                   const wxString& title,
 439                                   const wxPoint& pos,
 440                                   const wxSize& sizeOrig,
 441                                   long style,
 442                                   const wxString &name )
 443 {
 444     // always create a frame of some reasonable, even if arbitrary, size (at
 445     // least for MSW compatibility)
 446     wxSize size = sizeOrig;
 447     size.x = WidthDefault(size.x);
 448     size.y = HeightDefault(size.y);
 449
 450     wxTopLevelWindows.Append( this );
 451
 452     if (!PreCreation( parent, pos, size ) ||
 453         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 454     {
 455         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 456         return false;
 457     }
 458
 459     m_title = title;
 460
 461     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 462     //     e.g. in wxTaskBarIconAreaGTK
 463     if (m_widget == NULL)
 464     {
 465 #if wxUSE_LIBHILDON
 466         // we must create HildonWindow and not a normal GtkWindow as the latter
 467         // doesn't look correctly in Maemo environment and it must also be
 468         // registered with the main program object
 469         m_widget = hildon_window_new();
 470         hildon_program_add_window(wxTheApp->GetHildonProgram(),
 471                                   HILDON_WINDOW(m_widget));
 472 #else // !wxUSE_LIBHILDON
 473         m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 474         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 475         {
 476             // Tell WM that this is a dialog window and make it center
 477             // on parent by default (this is what GtkDialog ctor does):
 478             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 479                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 480             gtk_window_set_position(GTK_WINDOW(m_widget),
 481                                     GTK_WIN_POS_CENTER_ON_PARENT);
 482         }
 483         else
 484         {
 485             if (style & wxFRAME_TOOL_WINDOW)
 486             {
 487                 gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 488                                          GDK_WINDOW_TYPE_HINT_UTILITY);
 489
 490                 // On some WMs, like KDE, a TOOL_WINDOW will still show
 491                 // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 492                 // For consistency between WMs and with Windows, we
 493                 // should set the NO_TASKBAR flag which will apply
 494                 // the set_skip_taskbar_hint if it is available,
 495                 // ensuring no taskbar entry will appear.
 496                 style |= wxFRAME_NO_TASKBAR;
 497             }
 498         }
 499 #endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON
 500     }
 501
 502     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 503     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 504                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 505                        (style & wxFRAME_FLOAT_ON_PARENT)))
 506     {
 507         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 508                                       GTK_WINDOW(topParent->m_widget) );
 509     }
 510
 511     if (style & wxFRAME_NO_TASKBAR)
 512     {
 513         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 514     }
 515
 516     if (style & wxSTAY_ON_TOP)
 517     {
 518         gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 519     }
 520
 521 #if 0
 522     if (!name.empty())
 523         gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
 524 #endif
 525
 526     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 527     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 528
 529     g_signal_connect (m_widget, "delete_event",
 530                       G_CALLBACK (gtk_frame_delete_callback), this);
 531
 532     // m_mainWidget is a GtkVBox, holding the bars and client area (m_wxwindow)
 533     m_mainWidget = gtk_vbox_new(false, 0);
 534     gtk_widget_show( m_mainWidget );
 535     GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
 536     gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );
 537
 538     // m_wxwindow is the client area
 539     m_wxwindow = wxPizza::New();
 540     gtk_widget_show( m_wxwindow );
 541     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 542
 543     // we donm't allow the frame to get the focus as otherwise
 544     // the frame will grab it at arbitrary focus changes
 545     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 546
 547     if (m_parent) m_parent->AddChild( this );
 548
 549     g_signal_connect(m_wxwindow, "size_allocate",
 550         G_CALLBACK(size_allocate), this);
 551
 552     g_signal_connect (m_widget, "size_request",
 553                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 554     PostCreation();
 555
 556     if ((m_x != -1) || (m_y != -1))
 557         gtk_widget_set_uposition( m_widget, m_x, m_y );
 558
 559     //  we cannot set MWM hints and icons before the widget has
 560     //  been realized, so we do this directly after realization
 561     g_signal_connect (m_widget, "realize",
 562                       G_CALLBACK (gtk_frame_realized_callback), this);
 563
 564     // map and unmap for iconized state
 565     g_signal_connect (m_widget, "map_event",
 566                       G_CALLBACK (gtk_frame_map_callback), this);
 567     g_signal_connect (m_widget, "unmap_event",
 568                       G_CALLBACK (gtk_frame_unmap_callback), this);
 569
 570     // for wxMoveEvent
 571     g_signal_connect (m_widget, "configure_event",
 572                       G_CALLBACK (gtk_frame_configure_callback), this);
 573
 574     // activation
 575     g_signal_connect_after (m_widget, "focus_in_event",
 576                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 577     g_signal_connect_after (m_widget, "focus_out_event",
 578                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 579
 580     gtk_widget_add_events(m_widget, GDK_PROPERTY_CHANGE_MASK);
 581     g_signal_connect(m_widget, "property_notify_event",
 582         G_CALLBACK(property_notify_event), this);
 583
 584     // decorations
 585     if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
 586     {
 587         m_gdkDecor = 0;
 588         m_gdkFunc = 0;
 589     }
 590     else
 591     {
 592         m_gdkDecor = GDK_DECOR_BORDER;
 593         m_gdkFunc = GDK_FUNC_MOVE;
 594
 595         // All this is for Motif Window Manager "hints" and is supposed to be
 596         // recognized by other WMs as well.
 597         if ((style & wxCAPTION) != 0)
 598         {
 599             m_gdkDecor |= GDK_DECOR_TITLE;
 600         }
 601         if ((style & wxCLOSE_BOX) != 0)
 602         {
 603             m_gdkFunc |= GDK_FUNC_CLOSE;
 604         }
 605         if ((style & wxSYSTEM_MENU) != 0)
 606         {
 607             m_gdkDecor |= GDK_DECOR_MENU;
 608         }
 609         if ((style & wxMINIMIZE_BOX) != 0)
 610         {
 611             m_gdkFunc |= GDK_FUNC_MINIMIZE;
 612             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 613         }
 614         if ((style & wxMAXIMIZE_BOX) != 0)
 615         {
 616             m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 617             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 618         }
 619         if ((style & wxRESIZE_BORDER) != 0)
 620         {
 621            m_gdkFunc |= GDK_FUNC_RESIZE;
 622            m_gdkDecor |= GDK_DECOR_RESIZEH;
 623         }
 624     }
 625
 626     gtk_window_set_default_size(GTK_WINDOW(m_widget), m_width, m_height);
 627
 628     return true;
 629 }
 630
 631 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 632 {
 633 #if wxUSE_LIBHILDON
 634     // it can also be a (standard) dialog
 635     if ( HILDON_IS_WINDOW(m_widget) )
 636     {
 637         hildon_program_remove_window(wxTheApp->GetHildonProgram(),
 638                                      HILDON_WINDOW(m_widget));
 639     }
 640 #endif // wxUSE_LIBHILDON
 641
 642     if (m_grabbed)
 643     {
 644         wxFAIL_MSG(_T("Window still grabbed"));
 645         RemoveGrab();
 646     }
 647
 648     m_isBeingDeleted = true;
 649
 650     // it may also be GtkScrolledWindow in the case of an MDI child
 651     if (GTK_IS_WINDOW(m_widget))
 652     {
 653         gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
 654     }
 655
 656     if (g_activeFrame == this)
 657         g_activeFrame = NULL;
 658     if (g_lastActiveFrame == this)
 659         g_lastActiveFrame = NULL;
 660 }
 661
 662 bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
 663 {
 664     if (enable)
 665         m_gdkFunc |= GDK_FUNC_CLOSE;
 666     else
 667         m_gdkFunc &= ~GDK_FUNC_CLOSE;
 668
 669     if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
 670         gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
 671
 672     return true;
 673 }
 674
 675 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
 676 {
 677     if (show == m_fsIsShowing)
 678         return false; // return what?
 679
 680     m_fsIsShowing = show;
 681
 682     wxX11FullScreenMethod method =
 683         wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
 684                                  (WXWindow)GDK_ROOT_WINDOW());
 685
 686     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 687     //     to switch to fullscreen, which is not always available. We must
 688     //     check if WM supports the spec and use legacy methods if it
 689     //     doesn't.
 690     if ( method == wxX11_FS_WMSPEC )
 691     {
 692         if (show)
 693             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 694         else
 695             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 696     }
 697     else
 698     {
 699         GdkWindow *window = m_widget->window;
 700
 701         if (show)
 702         {
 703             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 704             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 705
 706             int screen_width,screen_height;
 707             wxDisplaySize( &screen_width, &screen_height );
 708
 709             gint client_x, client_y, root_x, root_y;
 710             gint width, height;
 711
 712             m_fsSaveGdkFunc = m_gdkFunc;
 713             m_fsSaveGdkDecor = m_gdkDecor;
 714             m_gdkFunc = m_gdkDecor = 0;
 715             gdk_window_set_decorations(window, (GdkWMDecoration)0);
 716             gdk_window_set_functions(window, (GdkWMFunction)0);
 717
 718             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 719             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 720                          &width, &height, NULL);
 721
 722             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 723                         screen_width + 1, screen_height + 1);
 724
 725             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 726                                     (WXWindow)GDK_ROOT_WINDOW(),
 727                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 728                                     show, &m_fsSaveFrame, method);
 729         }
 730         else // hide
 731         {
 732             m_gdkFunc = m_fsSaveGdkFunc;
 733             m_gdkDecor = m_fsSaveGdkDecor;
 734             gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 735             gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 736
 737             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 738                                     (WXWindow)GDK_ROOT_WINDOW(),
 739                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 740                                     show, &m_fsSaveFrame, method);
 741
 742             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 743                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 744         }
 745     }
 746
 747     // documented behaviour is to show the window if it's still hidden when
 748     // showing it full screen
 749     if (show)
 750         Show();
 751
 752     return true;
 753 }
 754
 755 // ----------------------------------------------------------------------------
 756 // overridden wxWindow methods
 757 // ----------------------------------------------------------------------------
 758
 759 bool wxTopLevelWindowGTK::Show( bool show )
 760 {
 761     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 762
 763     const bool wasRealized = GTK_WIDGET_REALIZED(m_widget);
 764     bool deferShow =
 765         show && m_deferShow && !wasRealized &&
 766         g_signal_handler_find(m_widget,
 767             GSignalMatchType(G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_DATA),
 768             g_signal_lookup("property_notify_event", GTK_TYPE_WIDGET),
 769             0, NULL, NULL, this);
 770     if (deferShow)
 771     {
 772         // Initial show. If WM supports _NET_REQUEST_FRAME_EXTENTS, defer
 773         // calling gtk_widget_show() until _NET_FRAME_EXTENTS property
 774         // notification is received, so correct frame extents are known.
 775         // This allows resizing m_widget to keep the overall size in sync with
 776         // what wxWidgets expects it to be without an obvious change in the
 777         // window size immediately after it becomes visible.
 778
 779         // Realize m_widget, so m_widget->window can be used. Realizing causes
 780         // the widget tree to be size_allocated, which generates size events in
 781         // the wrong order. So temporarily remove child from m_widget while
 782         // realizing.
 783         GtkWidget* child = GTK_BIN(m_widget)->child;
 784         if (child)
 785         {
 786             g_object_ref(child);
 787             gtk_container_remove(GTK_CONTAINER(m_widget), child);
 788         }
 789         gtk_widget_realize(m_widget);
 790         if (child)
 791         {
 792             gtk_container_add(GTK_CONTAINER(m_widget), child);
 793             g_object_unref(child);
 794         }
 795
 796         m_deferShow =
 797         deferShow = gdk_x11_screen_supports_net_wm_hint(
 798             gdk_drawable_get_screen(m_widget->window),
 799             gdk_atom_intern("_NET_REQUEST_FRAME_EXTENTS", false)) != 0;
 800     }
 801     if (deferShow)
 802     {
 803         // send _NET_REQUEST_FRAME_EXTENTS
 804         XClientMessageEvent xevent;
 805         memset(&xevent, 0, sizeof(xevent));
 806         xevent.type = ClientMessage;
 807         xevent.window = gdk_x11_drawable_get_xid(m_widget->window);
 808         xevent.message_type = gdk_x11_atom_to_xatom_for_display(
 809             gdk_drawable_get_display(m_widget->window),
 810             gdk_atom_intern("_NET_REQUEST_FRAME_EXTENTS", false));
 811         xevent.format = 32;
 812         Display* display = gdk_x11_drawable_get_xdisplay(m_widget->window);
 813         XSendEvent(display, DefaultRootWindow(display), false,
 814             SubstructureNotifyMask | SubstructureRedirectMask,
 815             (XEvent*)&xevent);
 816
 817         // defer calling gtk_widget_show()
 818         m_isShown = true;
 819         return true;
 820     }
 821
 822     if (show && !wasRealized)
 823     {
 824         // size_allocate signals occur in reverse order (bottom to top).
 825         // Things work better if the initial wxSizeEvents are sent (from the
 826         // top down), before the initial size_allocate signals occur.
 827         wxSizeEvent event(GetSize(), GetId());
 828         event.SetEventObject(this);
 829         HandleWindowEvent(event);
 830     }
 831
 832     bool change = wxTopLevelWindowBase::Show(show);
 833
 834     if (change && !show)
 835     {
 836         // make sure window has a non-default position, so when it is shown
 837         // again, it won't be repositioned by WM as if it were a new window
 838         // Note that this must be done _after_ the window is hidden.
 839         gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
 840     }
 841
 842     return change;
 843 }
 844
 845 void wxTopLevelWindowGTK::Raise()
 846 {
 847     gtk_window_present( GTK_WINDOW( m_widget ) );
 848 }
 849
 850 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 851 {
 852     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 853 }
 854
 855 // ----------------------------------------------------------------------------
 856 // window geometry
 857 // ----------------------------------------------------------------------------
 858
 859 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 860 {
 861     wxSize size(m_width, m_height);
 862     size -= m_decorSize;
 863     if (size.x < 0) size.x = 0;
 864     if (size.y < 0) size.y = 0;
 865     if (width)  *width  = size.x;
 866     if (height) *height = size.y;
 867 }
 868
 869 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 870 {
 871     wxCHECK_RET( m_widget, wxT("invalid frame") );
 872
 873     // deal with the position first
 874     int old_x = m_x;
 875     int old_y = m_y;
 876
 877     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 878     {
 879         // -1 means "use existing" unless the flag above is specified
 880         if ( x != -1 )
 881             m_x = x;
 882         if ( y != -1 )
 883             m_y = y;
 884     }
 885     else // wxSIZE_ALLOW_MINUS_ONE
 886     {
 887         m_x = x;
 888         m_y = y;
 889     }
 890
 891     if ( m_x != old_x || m_y != old_y )
 892     {
 893         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 894     }
 895
 896     const wxSize oldSize(m_width, m_height);
 897     if (width >= 0)
 898         m_width = width;
 899     if (height >= 0)
 900         m_height = height;
 901     ConstrainSize();
 902     if (m_width != oldSize.x || m_height != oldSize.y)
 903     {
 904         int w, h;
 905         GTKDoGetSize(&w, &h);
 906         gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 907
 908         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
 909         wxSizeEvent event(GetSize(), GetId());
 910         event.SetEventObject(this);
 911         HandleWindowEvent(event);
 912     }
 913 }
 914
 915 void wxTopLevelWindowGTK::DoSetClientSize(int width, int height)
 916 {
 917     if (m_deferShow && !m_isShown)
 918         // Since client size is being explicitly set, don't change it later
 919         m_deferShow = false;
 920     wxTopLevelWindowBase::DoSetClientSize(width, height);
 921 }
 922
 923 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 924 {
 925     wxASSERT_MSG(m_widget, wxT("invalid frame"));
 926
 927     if ( IsIconized() )
 928     {
 929         // for consistency with wxMSW, client area is supposed to be empty for
 930         // the iconized windows
 931         if ( width )
 932             *width = 0;
 933         if ( height )
 934             *height = 0;
 935     }
 936     else
 937     {
 938         GTKDoGetSize(width, height);
 939     }
 940 }
 941
 942 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
 943                                           int maxW, int maxH,
 944                                           int incW, int incH )
 945 {
 946     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 947
 948     const wxSize minSize = GetMinSize();
 949     const wxSize maxSize = GetMaxSize();
 950     GdkGeometry hints;
 951     int hints_mask = 0;
 952     if (minSize.x > 0 || minSize.y > 0)
 953     {
 954         hints_mask |= GDK_HINT_MIN_SIZE;
 955         hints.min_width = minSize.x - m_decorSize.x;
 956         if (hints.min_width < 0)
 957             hints.min_width = 0;
 958         hints.min_height = minSize.y - m_decorSize.y;
 959         if (hints.min_height < 0)
 960             hints.min_height = 0;
 961     }
 962     if (maxSize.x > 0 || maxSize.y > 0)
 963     {
 964         hints_mask |= GDK_HINT_MAX_SIZE;
 965         hints.max_width = maxSize.x - m_decorSize.x;
 966         if (hints.max_width < 0)
 967             hints.max_width = INT_MAX;
 968         hints.max_height = maxSize.y - m_decorSize.y;
 969         if (hints.max_height < 0)
 970             hints.max_height = INT_MAX;
 971     }
 972     if (incW > 0 || incH > 0)
 973     {
 974         hints_mask |= GDK_HINT_RESIZE_INC;
 975         hints.width_inc  = incW > 0 ? incW : 1;
 976         hints.height_inc = incH > 0 ? incH : 1;
 977     }
 978     gtk_window_set_geometry_hints(
 979         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
 980 }
 981
 982 void wxTopLevelWindowGTK::GTKUpdateDecorSize(const wxSize& decorSize)
 983 {
 984     if (m_decorSize != decorSize)
 985     {
 986         const wxSize diff = decorSize - m_decorSize;
 987         m_decorSize = decorSize;
 988         bool resized = false;
 989         if (m_deferShow)
 990         {
 991             // keep overall size unchanged by shrinking m_widget
 992             int w, h;
 993             GTKDoGetSize(&w, &h);
 994             // but not if size would be less than minimum, it won't take effect
 995             const wxSize minSize = GetMinSize();
 996             if (w >= minSize.x && h >= minSize.y)
 997             {
 998                 gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 999                 resized = true;
1000             }
1001         }
1002         if (!resized)
1003         {
1004             // adjust overall size to match change in frame extents
1005             m_width  += diff.x;
1006             m_height += diff.y;
1007             if (m_width  < 0) m_width  = 0;
1008             if (m_height < 0) m_height = 0;
1009             if (!m_deferShow)
1010             {
1011                 m_oldClientWidth = 0;
1012                 gtk_widget_queue_resize(m_wxwindow);
1013             }
1014         }
1015     }
1016     if (m_deferShow)
1017     {
1018         // gtk_widget_show() was deferred, do it now
1019         m_deferShow = false;
1020         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
1021         wxSizeEvent sizeEvent(GetSize(), GetId());
1022         sizeEvent.SetEventObject(this);
1023         HandleWindowEvent(sizeEvent);
1024
1025         gtk_widget_show(m_widget);
1026
1027         wxShowEvent showEvent(GetId(), true);
1028         showEvent.SetEventObject(this);
1029         HandleWindowEvent(showEvent);
1030     }
1031 }
1032
1033 void wxTopLevelWindowGTK::OnInternalIdle()
1034 {
1035     // set the focus if not done yet and if we can already do it
1036     if ( GTK_WIDGET_REALIZED(m_wxwindow) )
1037     {
1038         if ( g_delayedFocus &&
1039              wxGetTopLevelParent((wxWindow*)g_delayedFocus) == this )
1040         {
1041             wxLogTrace(_T("focus"),
1042                        _T("Setting focus from wxTLW::OnIdle() to %s(%s)"),
1043                        g_delayedFocus->GetClassInfo()->GetClassName(),
1044                        g_delayedFocus->GetLabel().c_str());
1045
1046             g_delayedFocus->SetFocus();
1047             g_delayedFocus = NULL;
1048         }
1049     }
1050
1051     wxWindow::OnInternalIdle();
1052
1053     // Synthetize activate events.
1054     if ( g_sendActivateEvent != -1 )
1055     {
1056         bool activate = g_sendActivateEvent != 0;
1057
1058         // if (!activate) wxPrintf( wxT("de") );
1059         // wxPrintf( wxT("activate\n") );
1060
1061         // do it only once
1062         g_sendActivateEvent = -1;
1063
1064         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1065     }
1066 }
1067
1068 // ----------------------------------------------------------------------------
1069 // frame title/icon
1070 // ----------------------------------------------------------------------------
1071
1072 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1073 {
1074     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1075
1076     if ( title == m_title )
1077         return;
1078
1079     m_title = title;
1080
1081     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1082 }
1083
1084 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1085 {
1086     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1087
1088     wxTopLevelWindowBase::SetIcons( icons );
1089
1090     GList *list = NULL;
1091
1092     const size_t numIcons = icons.GetIconCount();
1093     for ( size_t i = 0; i < numIcons; i++ )
1094     {
1095         list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1096     }
1097
1098     gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1099     g_list_free(list);
1100 }
1101
1102 // ----------------------------------------------------------------------------
1103 // frame state: maximized/iconized/normal
1104 // ----------------------------------------------------------------------------
1105
1106 void wxTopLevelWindowGTK::Maximize(bool maximize)
1107 {
1108     if (maximize)
1109         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1110     else
1111         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1112 }
1113
1114 bool wxTopLevelWindowGTK::IsMaximized() const
1115 {
1116     if(!m_widget->window)
1117         return false;
1118
1119     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1120 }
1121
1122 void wxTopLevelWindowGTK::Restore()
1123 {
1124     // "Present" seems similar enough to "restore"
1125     gtk_window_present( GTK_WINDOW( m_widget ) );
1126 }
1127
1128 void wxTopLevelWindowGTK::Iconize( bool iconize )
1129 {
1130     if (iconize)
1131         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1132     else
1133         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1134 }
1135
1136 bool wxTopLevelWindowGTK::IsIconized() const
1137 {
1138     return m_isIconized;
1139 }
1140
1141 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1142 {
1143     if ( iconize != m_isIconized )
1144     {
1145         m_isIconized = iconize;
1146         (void)SendIconizeEvent(iconize);
1147     }
1148 }
1149
1150 void wxTopLevelWindowGTK::AddGrab()
1151 {
1152     if (!m_grabbed)
1153     {
1154         m_grabbed = true;
1155         gtk_grab_add( m_widget );
1156         wxGUIEventLoop().Run();
1157         gtk_grab_remove( m_widget );
1158     }
1159 }
1160
1161 void wxTopLevelWindowGTK::RemoveGrab()
1162 {
1163     if (m_grabbed)
1164     {
1165         gtk_main_quit();
1166         m_grabbed = false;
1167     }
1168 }
1169
1170
1171 // helper
1172 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1173 {
1174     if (window)
1175     {
1176         if (region.IsEmpty())
1177         {
1178             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1179         }
1180         else
1181         {
1182             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1183             return true;
1184         }
1185     }
1186     return false;
1187 }
1188
1189
1190 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1191 {
1192     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1193                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1194
1195     GdkWindow *window = NULL;
1196     if (m_wxwindow)
1197     {
1198         do_shape_combine_region(m_wxwindow->window, region);
1199     }
1200     window = m_widget->window;
1201     return do_shape_combine_region(window, region);
1202 }
1203
1204 bool wxTopLevelWindowGTK::IsActive()
1205 {
1206     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1207 }
1208
1209 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1210 {
1211     bool new_hint_value = false;
1212
1213     // FIXME: This is a workaround to focus handling problem
1214     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
1215     // yet been processed, and the internal focus system is not up to date yet.
1216     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
1217     ::wxYieldIfNeeded();
1218
1219     if(m_urgency_hint >= 0)
1220         g_source_remove(m_urgency_hint);
1221
1222     m_urgency_hint = -2;
1223
1224     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1225     {
1226         new_hint_value = true;
1227
1228         if (flags & wxUSER_ATTENTION_INFO)
1229         {
1230             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1231         } else {
1232             m_urgency_hint = -1;
1233         }
1234     }
1235
1236 #if GTK_CHECK_VERSION(2,7,0)
1237     if(!gtk_check_version(2,7,0))
1238         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1239     else
1240 #endif
1241         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1242 }
1243
1244 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1245 {
1246     // Store which styles were changed
1247     long styleChanges = style ^ m_windowStyle;
1248
1249     // Process wxWindow styles. This also updates the internal variable
1250     // Therefore m_windowStyle bits carry now the _new_ style values
1251     wxWindow::SetWindowStyleFlag(style);
1252
1253     // just return for now if widget does not exist yet
1254     if (!m_widget)
1255         return;
1256
1257     if ( styleChanges & wxSTAY_ON_TOP )
1258     {
1259         gtk_window_set_keep_above(GTK_WINDOW(m_widget),
1260                                   m_windowStyle & wxSTAY_ON_TOP);
1261     }
1262
1263     if ( styleChanges & wxFRAME_NO_TASKBAR )
1264     {
1265         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget),
1266                                          m_windowStyle & wxFRAME_NO_TASKBAR);
1267     }
1268 }
1269
1270 /* Get the X Window between child and the root window.
1271    This should usually be the WM managed XID */
1272 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1273 {
1274     Window root, parent;
1275     Window* children;
1276     unsigned int nchildren;
1277
1278     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1279     XFree(children);
1280
1281     while (parent != root) {
1282         child = parent;
1283         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1284         XFree(children);
1285     }
1286
1287     return child;
1288 }
1289
1290 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1291 {
1292     if (!m_widget || !m_widget->window)
1293         return false;
1294
1295     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1296     // We need to get the X Window that has the root window as the immediate parent
1297     // and m_widget->window as a child. This should be the X Window that the WM manages and
1298     // from which the opacity property is checked from.
1299     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1300
1301
1302     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1303     if (alpha == 0xff)
1304         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1305     else
1306     {
1307         long opacity = alpha * 0x1010101L;
1308         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1309                         XA_CARDINAL, 32, PropModeReplace,
1310                         (unsigned char *) &opacity, 1L);
1311     }
1312     XSync(dpy, False);
1313     return true;
1314 }
1315
1316 bool wxTopLevelWindowGTK::CanSetTransparent()
1317 {
1318     // allow to override automatic detection as it's far from perfect
1319     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1320     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1321     {
1322         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1323     }
1324
1325 #if GTK_CHECK_VERSION(2,10,0)
1326     if (!gtk_check_version(2,10,0))
1327     {
1328         return (gtk_widget_is_composited (m_widget));
1329     }
1330     else
1331 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1332     {
1333         return false;
1334     }
1335
1336 #if 0 // Don't be optimistic here for the sake of wxAUI
1337     int opcode, event, error;
1338     // Check for the existence of a RGBA visual instead?
1339     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1340                            "Composite", &opcode, &event, &error);
1341 #endif
1342 }
1343
1344 void wxTopLevelWindowGTK::OnSysColourChanged(wxSysColourChangedEvent& event)
1345 {
1346     // We don't know the order in which top-level windows will
1347     // be notified, so we need to clear the system objects
1348     // for each top-level window.
1349     extern void wxClearGtkSystemObjects();
1350     wxClearGtkSystemObjects();
1351
1352     // wxWindowBase::OnSysColourChanged will propagate event
1353     // to children
1354     event.Skip();
1355 }